What gave me the panic attack was seeing all the people's shoes, eyeglasses, hair and suitcases that they had confiscated. You see children's shoes and it really hits home.
I've been there too, it's a bit similar to the killing fields in Cambodia in my experience.
Two suggestions from OP's 'profile' description.
- Do go, there's no blood or gore like in movies and very educational and rewarding.
- Avoid said above room. It's by far the most confrontational. Everything else you can regulate yourself reasonably well to what extent it affects you.